Revision 64
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| lab4/kbd.c | ||
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#include <lcom/lcf.h> |
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#include "kbd.h" |
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#include "kbc_macros.h" |
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#include "kbc.h" |
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int (subscribe_kbc_interrupt)(uint8_t interrupt_bit, int *interrupt_id) {
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if (interrupt_id == NULL) return 1; |
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*interrupt_id = interrupt_bit; |
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return (sys_irqsetpolicy(KBC_IRQ, IRQ_REENABLE | IRQ_EXCLUSIVE, interrupt_id)); |
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} |
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void (kbc_ih)(void) {
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uint8_t status = 0; |
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got_error = 0; |
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if (util_sys_inb(STATUS_REG, &status)) {
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got_error = 1; |
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return; |
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} |
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if (status & (TIME_OUT_REC | PARITY_ERROR)) {
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got_error = 1; |
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return; |
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} |
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uint8_t byte = 0; |
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if (util_sys_inb(OUTPUT_BUF, &byte)) {
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got_error = 1; |
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return; |
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} |
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if (two_byte_scancode) {
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scancode[1] = byte; |
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two_byte_scancode = 0; |
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} else {
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scancode[0] = byte; |
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two_byte_scancode = (byte == TWO_BYTE_CODE); |
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} |
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} |
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int (kbd_poll)(uint8_t bytes[], uint8_t *size){
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if(bytes == NULL || size == NULL) return 1; |
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uint8_t c; |
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if(kbc_read_byte(&c)) return 1; |
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if(c == TWO_BYTE_CODE){
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if(kbc_read_byte(&bytes[1])) return 1; |
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bytes[0] = c; |
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*size = 2; |
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}else{
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bytes[1] = 0; |
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bytes[0] = c; |
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*size = 1; |
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} |
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return 0; |
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} |
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| lab4/kbd.h | ||
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/** |
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* This file concerns everything related to the keyboard |
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*/ |
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#ifndef KBD_H_INCLUDED |
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#define KBD_H_INCLUDED |
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int (subscribe_kbc_interrupt)(uint8_t interrupt_bit, int *interrupt_id); |
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uint8_t scancode[2]; |
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int two_byte_scancode = 0; |
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int got_error = 0; |
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void (kbc_ih)(void); |
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int (kbd_poll)(uint8_t bytes[], uint8_t *size); |
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#endif //KBD_H_INCLUDED |
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| lab4/Makefile | ||
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PROG=lab4 |
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# source code files to be compiled |
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SRCS = lab4.c mouse.c utils.c kbc.c kbd.c
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SRCS = lab4.c mouse.c utils.c kbc.c keyboard.c
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# additional compilation flags |
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# "-Wall -Wextra -Werror -I . -std=c11 -Wno-unused-parameter" are already set |
| lab4/utils.c | ||
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#include "errors.h" |
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#include <lcom/lcf.h> |
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#include <stdint.h> |
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int(util_get_LSB)(uint16_t val, uint8_t *lsb) {
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if (lsb == NULL) return 1; |
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*lsb = val; |
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return 0; |
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} |
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int(util_get_MSB)(uint16_t val, uint8_t *msb) {
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if (msb == NULL) return 1; |
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*msb = (val >> 8); |
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return 0; |
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} |
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#ifdef LAB3 |
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uint32_t sys_inb_counter = 0; |
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#endif |
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int (util_sys_inb)(int port, uint8_t *value) {
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if(value == NULL) return NULL_PTR;
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if(value == NULL) return 1;
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uint32_t n = 0; |
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if(sys_inb(port, &n)) return READ_ERROR;
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if(sys_inb(port, &n)) return 1;
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*value = n; |
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return SUCCESS; |
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#ifdef LAB3 |
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++sys_inb_counter; |
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#endif |
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return 0; |
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} |
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